VOL.7. No. 10
RECENT BOOKS
in urging the student to make acquaintance with this field as early as possible. DONALD H. ANDRBWS
The Measurement of Hydrogen-Ion ConJu~rus GRANT,PH.D., centration. MSc. (London), A. I. C. Longmans, Green & Co.. New York City, 1930. viii 159 PP. 40 figures. 14 X 22 cm. $3.75.
+
This book is intended primarily for the worker in the industrial laboratow who has little or no knowledge of eiectrochemistry. but feels that a howledge of hydrogen-ion determination is essential for his purpose. It aims to give a short treatment t o the theoretical side of the subject and a simple description of the methods used, and an indication of the pitfalls and erron. For those interested in a more extensive study of the subject, a large number of selected references are given at the end of each part. The book is divided into five parts. The first part covering 28 pages takes up the theory of ionization, bu6ers, and pH. Part 11, covering 46 pages, is devoted to the eleetrametric method. The theory is taken up in an elementary manner together with the preparation and use of the calomel, hydrogen, quinhydrone, and glass electrodes. A chapter on the measurement of electromotive force, and one on the common errors and sources of trouble, and a method of calculating results with a description of a nomogram designed by the author for the rapid conversion of millivolts into pH values completes this section. Part 111, the colorimetric method, covering 26 pages, discusses the theory and selection of indicators, colorimetry, and their practical use with a discussion of errors and applications. Part IV, methods and technic applicable t o p k c u l a r cases, takes up practical problems met with in agriculture. biochemi&, dyestds, fermentation, leather, eledra-deposition, paper, pharmacy, and water. While the space devoted
2531
to each is of necessity brief, it gives the student some idea of its practical value. Part V contains eight tables giving data on ionization constants, buffers, indicators. etc. The hook is well written and should be welcomed by those desiring a working knowledge of the subject, but not desirous of studying the more extensive works on the subject. D. C. LICH~NWA-NBR DSB-
INsxmrs
P-DBLPHU.
PA.
Introduction to Physiological Chemistry. MzYzn BODANSKY. PH.D., Director of Laboratories. John Sealy Hospital, Galwston, and Professor of Pathological Chemistry, University of Texas. Second edition. John Wiley and Sons, Inc.. New York City, 1930. ix f 542 pp. 46 figures. 51 tables. 15 X 23
an. $4.00. In this book the general field of physiological chemistry as applied to animals is well covered. A chapter on the Composition of Foods with useful tables and &other on the Composition of Milk and Certain Tissues have been added in the second edition. The material on each subject has been brought up t o date so skilfully that, while the danger of aceepting unseasoned contributions t o such a rapidly progressing science as physiological chemistry is present, one does not feel that the author is drawing unwarranted conclusions nor that the reader will be misled. Among other changes, the discnssion of Carbohydrates and Photosynthesis has been expanded, the presentation of the material on Fats reamanxed and made more clear and the theories of protein structure enlarged. The chapter on Dkestion and the Chemistry of Enzyme is especially good and the same can be said of the sections on Water Balance, Internal Secretions, and Nutrition. On the other hand, one feels that the mathematical treatment of the Derimtion of the Gas Laws and of Osmosis is
on
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JOURNAL OF CHEMICAL SDUCATION
more or less supduous, being too brief and condensed for the average medical student, and familiar in any case to the dyed-in-thewwl physical chemist. The section on molecular weights of proteins is rather meager in view of the many recent contributions t o this field. After having read this book with its excellent and very accessible bibliography one recognizes a comprehensive and accurate compilation of modern biochemical data; but in addition the material is presented in a cogent, logical manner with the interest constantly maintained by those various devices which form the armamentarium of a good teacher. The book in its present form is one of the best of the newer texts in physiological chemistry. A R ~ UH. R SMITH YALBUNIYBRSITY NBW HAVBX, CONN.
BULLETINS List of Researeh and Publications, University of Arkansas, 1924-1929. University of Arkansas Bulletin, Vol. 23, No. 19 (April. 1930). Published a t Fayetteville, Arkansas. 30 pp. This Bulletin lists 428 titles of research articles, reviews, books, and musical composition published within the sixyear period. 1924-29, by members of the faculty and of the agricultural experiment station of the University of Arkansas. The titles cover a very wide range of subjects. and bear witness t o the scholastic attainments of the university's staff. The High-School Science Library for 1929-1930. Hanor A. Webb, Editor of Current Science. 14 pp. $0.10. This pamphlet is a reprint of an article by HANORA. WEBB, Editor of Cwred Science, George Peabody College for
Teachers, Nashville, Teuu., published originally in the Peabody Journal of Education, 8, 3 5 4 8 (July, 1930). The' newest books in the field of science on the junior and senior high-school level are classified according to subjects and to price groups, the prices ranging from $10 to over $250. A list of publishers and their addresses and p r i m of individual books are included. The pamphlet may be obtained from the author a t the price of $0.10. This pamphlet is one of an annual series. The following lists are available a t the price of $0.10 each, except for the first one which is $0.25. The High-Sehwl Science Library for 1910-25; for 1925-26; for 1926-27; for 1927-28; for 1928-29. Resistance Thermometers. Catalog No. 80. Leeds & Northrup Co., Philadelphia, Penna.. 1930. 28 pp. 20 X 26.5 cm. Gratis. This catalog is a revised edition of a previous issue, and treats in detail of L & N Resistance Thermometers for recording, controlling, and indicating temperatures. Considerable space is devoted t o heating and ventilating applications, applications in refrigeration and chemical plants, in gas-making, and other comparatively low-temperature applications. Precision equipment is listed, temperature difference equipment, thermometer indicators, thermometer recorders, and thermometer controllers with accessories. Illustrations and diagrams are included. Abstracts of Scientific and Technical Publications from the Massachllsetts Institute of Technology. Nos. 5 and 6, Janw r y and July, 1930. The Technology Press, Cambridge, Mass. 45 and 99 pp., resp. 15 X 23 cm.
The Story of Modern Lacquer. I n connection with an extensive advertising campaign recently initiated by the Hercules Powder Co., Wilmington, Del., a booklet, available on request, has been issued on "The Story of Modern Lacquer."
